Rank	Countries/Territories	Count	Percent
1	United States	320	41.3%
2	China	167	21.5%
3	Germany	91	11.7%
4	Japan	42	5.4%
5	Portugal	29	3.7%
6	Singapore	19	2.5%
7	Netherlands	17	2.2%
8	France	17	2.2%
9	Ireland	9	1.2%
10	Australia	9	1.2%
11	Hong Kong	7	0.9%
12	India	7	0.9%
13	Italy	7	0.9%
14	Korea, Republic of	6	0.8%
15	Iran, Islamic Republic of	4	0.5%
16	Cyprus	4	0.5%
17	United Kingdom	4	0.5%
18	Russia	2	0.3%
19	Taiwan	2	0.3%
20	Ukraine	2	0.3%
21	Canada	2	0.3%
22	Malaysia	2	0.3%
23	Mexico	2	0.3%
24	Argentina	1	0.1%
25	Chile	1	0.1%
26	Viet Nam	1	0.1%
27	Romania	1	0.1%